Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
Scientists have taken an instrument originally designed to study huge celestial objects in the cosmos and repurposed it to investigate the world on an infinitely smaller scale. With this instrument, they managed to probe the heart of the atom. polarimeter they could tap into. This device, known as a Compton camera, can measure the polarization of high-energy light waves. In other words, it can dissect what direction such high-energy light is orientated toward.
While 270 stable atomic nuclei are known to exist in nature, the number of known isotopes of elements jumps up to 3,000 when unstable atomic nuclei are factored in. The polarization of photons from charged particles turns unpolarized light into polarized light, with the orientation of polarization arising as a result of the scattering angle. The Compton camera can precisely measure this scattering angle and the polarization of these gamma rays, which indicates properties of particles within the atom, such as the value of quantum mechanical characteristics called"spin" and"parity.
The Kavli Institute for the Physics and Mathematics of the Universe scientist added that the CdTe sensor developed by his group also achieves high-energy resolution for sub-MeV gamma rays.
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